Plant Viruses
Online 
Descriptions and Lists from
the VIDE Database
Unassigned
potyviruses: Potyviridae
Index
Nomenclature
ICTV reference
Tentative species
Host range and
symptoms
Natural host range and symptoms
Symptoms
persist (32/33), or disappear soon after infection (1/33).
Transmission
Transmitted by a vector (27/27); an insect
(27/27); Aphididae (27/27). Transmitted in a non-persistent manner (19/19).
Virus lost by the vector when it moults (2/2); does not multiply in the vector
(1/1); not transmitted congenitally to the progeny of the vector (1/1);
transmitted by mechanical inoculation (35/37), or not transmitted by mechanical
inoculation (2/37); transmitted by grafting (6/6); not transmitted by contact
between plants (2/2); transmitted by seed (1/8), or not transmitted by seed
(7/8); not transmitted by pollen (1/1).
Experimental host range
Several (3-9) families
susceptible (9/35), or few (<3) families susceptible (26/35).
Susceptible host species
Insusceptible host species
Families containing susceptible hosts
Families containing
insusceptible hosts
Physical and
biochemical properties
Properties of particles in sap
TIP:
50-60.05-75 °C. LIV: 0.6-6.46-20 days. DEP: log10 minus 1-2 (2/25), or 3
(8/25), or 4-5 (7/25), or 6 (5/25). Leaf sap contains few virions (9/11), or
contains many virions (2/11).
Particle morphology
Virions filamentous (49/49); not
enveloped (32/32); usually straight (1/40), or usually flexuous (39/40); with a
clear modal length (38/40), or with no clear modal length (2/40); of
600-747.7-850 nm; 12-12.88-15 nm wide. Axial canal obscure (13/13). Basic helix
obvious (2/9), or obscure (7/9); pitch of basic helix 3.4 nm.
Physical properties
One sedimenting component in purified
preparations (5/5); sedimentation coefficient 118-139.6-168 S. Density
1.325 g cm-3 in CsCl. A260/A280 ratio 1.22-1.302-1.34.
Biochemical properties
Virions contain 5.5-5.75-6 %
nucleic acid; 94-94.25-94.5 % protein.
Genome consists of RNA (5/5); single-stranded (5/5); linear (1/1). Total
genome size 10-10.1-10.2 kb. Genome unipartite (3/3); largest (or only) genome
part 10 kb. Base composition 23.3 % G; 25.5 % A; 24.8 % C; 26.3 % U.
Features of the genome
1 virus specified dsRNA
species found in infected cells. Size of largest virus specified dsRNA 11.2 kbp.
Features of proteins
Virion protein(s) one (8/8);
Mr 27400-32760-41500.
Replication
Replication does not depend on a helper virus
(1/1).
Cytopathology
Virions found in cytoplasm (13/13), or in
nuclei (1/13). Inclusions present in infected cells (24/24); are crystals in the
cytoplasm (1/25), or crystals in the nucleus (1/25), or amorphous X-bodies
(1/25), or viroplasms (1/25), or pinwheels (24/25), or unusual in shape (2/25);
they contain virions (1/15), or they do not contain virions (14/15).
Taxonomy and
relationships
Viral family : Potyviridae.
Cite this publication as:
Brunt, A.A., Crabtree, K., Dallwitz, M.J., Gibbs, A.J., Watson, L. and Zurcher, E.J. (eds.)
(1996 onwards).
`Plant Viruses Online: Descriptions and Lists from the VIDE Database.
Version: 20th August 1996.' URL
http://biology.anu.edu.au/Groups/MES/vide/
Dallwitz (1980)
and
Dallwitz, Paine and Zurcher (1993)
should also be cited.
Please send comments, corrections and suggestions to:
vide-manager@biology.anu.edu.au